Journal article
Beam-generated upper hybrid noise in Jupiter's outer magnetosphere
Journal of Geophysical Research, Vol.95(A6), pp.8177-8186
06/01/1990
DOI: 10.1029/JA095iA06p08177
Abstract
A model for generation of upper hybrid waves in Jupiter's outer magnetosphere is presented. Energetic electrons accelerated on high-latitude auroral field lines at 1 R(J) altitudes are assumed to stream outwards to the distant magnetosphere. The large decrease in the local magnetic field strength results in a highly collimated, field-aligned electron beam due to conservation of the particle's magnetic moment. As the beam travels outward it passes through the plasma sheet boundary layer region located on the edges of the plasma sheet. Because of the large field-aligned anisotropy of the beam, the distribution is unstable to the excitation of the upper hybrid waves which amplify and then undergo mode conversion at the f(p) layer to generate the Jovian continuum radiation. A novel feature of the model is the beam-anisotropic heat flux instability which drives UH waves unstable without the need for any positive slope on the electron distribution function.
Details
- Title: Subtitle
- Beam-generated upper hybrid noise in Jupiter's outer magnetosphere
- Creators
- D. D. Barbosa - California State University Los AngelesW. S. Kurth - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Journal of Geophysical Research, Vol.95(A6), pp.8177-8186
- DOI
- 10.1029/JA095iA06p08177
- ISSN
- 0148-0227
- eISSN
- 2156-2202
- Language
- English
- Date published
- 06/01/1990
- Description audience
- PUBLIC
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984455580002771
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